Table 3.
Odds ratio for RTC (SDS vs. OS) in all patient subgroups reviewed
| Patient group (number of patients) | Odds ratio for any RTC (SDS vs. OS) | 95% Confidence interval | p value |
|---|---|---|---|
| Age of 75–84 years (195) | 0.20 | 0.03–1.52 | 0.12 |
| BMI 30–35 (136) | 0.57 | 0.21–1.53 | 0.27 |
| BMI 35–40 (48) | 0.40 | 0.07–2.36 | 0.31 |
| ASA I (136) | 0.48 | 0.18–1.34 | 0.16 |
| ASA II (467) | 0.93 | 0.56–1.55 | 0.78 |
| ASA III (296) | 0.47 | 0.15–1.43 | 0.18 |
| Mastectomy as a reoperation after BCS with positive margins (92) | 1.05 | 0.25–4.47 | 0.95 |
| History of ipsilateral BCS and radiation therapy (49) | 2.04 | 0.43–11.90 | 0.43 |
| Surgeon's experience | |||
| Up to 20 mastectomies (64) | 0.20 | 0.02–1.72 | 0.14 |
| 21–50 (116) | 0.21 | 0.07–1.77 | 0.21 |
| 51–100 (124) | 1.11 | 0.43–2.86 | 0.83 |
| Over 100 (605) | 0.86 | 0.53–1.40 | 0.55 |
| Axillary procedure | |||
| SNB (305) | 0.40 | 0.16–0.99 | 0.049* |
| ALND (487) | 0.85 | 0.52–1.40 | 0.53 |
| Bilateral procedure (102) | 1.43 | 0.26–7.96 | 0.68 |
| Diabetes (81) | 0.89 | 0.17–4.58 | 0.89 |
| Smoker (current or former) (289) | 0.89 | 0.49–1.60 | 0.69 |
| Neoadjuvant therapy (96) | 0.96 | 0.33–2.79 | 0.94 |
Note: *Statistical significance p < 0.05.
Abbreviations: ALND, axillary lymph node dissection; ASA, American Society of Anaesthesiologists; BCS, breast conserving surgery; BMI, body‐mass index; OS, overnight stay surgery; RTC, unplanned return to care; SDS, same‐day surgery; SNB, sentinel node biopsy.